High elasticity waist support waistrest

Abstract

The application discloses a high-elasticity waist support waist rest, which comprises a waist rest body and a supporting base, the waist rest body comprises a main body part and two waist piece parts, the main body part and the waist piece part on each side are connected through elastic members, the supporting base comprises two elastic arms which are symmetrical left and right, the two elastic arms are bent in a U shape as a whole, the front end of the elastic arm is connected with the waist piece part through a movable structure, so that the waist piece part can rotate left and right relative to the elastic arm at least, and the elastic member and the elastic arm both have elastic deformation capacity; the front end faces of the main body part and the two waist piece parts are combined to form a supporting surface, when the main body part is leaned and moves backward relative to the supporting base, the elastic member and the elastic arm both produce elastic deformation, so that the two elastic arms and the waist piece parts are all inwardly folded relative to the main body part, and the curvature of the supporting surface is increased. The high-elasticity waist support waist rest provided by the application can realize self-adapting waist wrapping actions of the two waist piece parts, and can provide more comfortable and elastic waist wrapping feeling.

Description

Technical Field

[0001] This utility model relates to the field of lumbar support technology, specifically to a high-elasticity lumbar support. Background Technology

[0002] A lumbar support is a component on seating used to support the user's lower back, playing an important role in relieving lower back fatigue and protecting lower back health. With the improvement of living standards, consumers have placed higher demands on the comfort, adaptability, and convenience of lumbar supports.

[0003] For example, one type of lumbar support currently on the market has two lumbar panels that are rotatably connected to both sides of the lumbar support. In addition to supporting the back of the waist with the lumbar support, the lumbar panels can be rotated to fit snugly against the sides of the waist, creating a more comfortable lumbar support. Furthermore, the lumbar panels and the lumbar support are connected by an adjustment mechanism, allowing the lumbar panels to be suspended at multiple tilt angles. Users can adjust the lumbar panels to a suitable angle according to their own body shape.

[0004] However, the above solution has the following problems: users need to manually adjust the angle of the waist piece, which is relatively laborious and inconvenient to use. Moreover, once the angle of the waist piece is fixed, the overall curvature of the lumbar support will not change easily, which means that the waist piece cannot clamp the user's waist tightly and cannot provide the user's waist with a more firm and elastic waist-hugging feel, and the comfort is still insufficient. Summary of the Invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a highly elastic lumbar support, in which both the elastic element and the elastic arm have elastic deformation capabilities. When the main body is leaned against, the elastic element undergoes elastic deformation under the pull of the main body and pulls the lumbar section inward. The lumbar section rotates inward relative to the elastic arm and pulls the elastic arm inward at the same time, causing the elastic arm to also undergo elastic deformation. The elastic arms on both sides drive the lumbar section to also shrink inward, increasing the curvature of the support surface and realizing the adaptive waist-wrapping action of the lumbar section on both sides. This allows it to better clamp and wrap the user's waist inward, providing a more comfortable and elastic waist-wrapping feel.

[0006] The effect of this utility model is achieved as follows: This application provides a highly elastic lumbar support, including a lumbar support body and a support base. The lumbar support body includes a main body and two lumbar sections symmetrically arranged on both sides of the main body. The main body and each lumbar section are connected by an elastic element. The support base includes two symmetrical elastic arms, which are bent in a U-shape. The front end of the elastic arm is connected to the lumbar section through a movable structure, allowing the lumbar section to rotate at least left and right relative to the elastic arm. Both the elastic element and the elastic arm have elastic deformation capability. The front end faces of the main body and the two lumbar sections on both sides combine to form a support surface. When the main body is leaned against and moves backward relative to the support base, the elastic element and the elastic arm both undergo elastic deformation, causing the elastic arms on both sides and the lumbar sections to retract inward relative to the main body, increasing the curvature of the support surface.

[0007] Furthermore, the elastic element has a U-shaped structure that bends backward. This makes the elastic element simple in structure and gives it good elasticity. When the main body pulls the elastic element backward to deform it, the elastic element can pull the waist piece inward in the direction of bending, ensuring a smooth and stable waist-wrapping operation.

[0008] Furthermore, multiple elastic elements are arranged vertically at intervals between the waist section and the main body on each side. This not only enhances the connection strength and stability between the waist section and the main body, but also makes it easier for each elastic element to undergo elastic deformation under pressure, ensuring a smooth and stable waist-wrapping operation.

[0009] Furthermore, the main body, waist section, and elastic components are integrally molded. This integral molding process not only simplifies manufacturing but also enhances the strength of the lumbar support body.

[0010] Furthermore, the support base also includes a mounting section configured to connect to the chair back. Elastic arms extend from the left and right sides of the mounting section, tapering in thickness from the side closest to the mounting section to the side closest to the lumbar support. This not only facilitates deformation of the elastic arms to achieve the lumbar support action but also ensures high connection strength and stability between the elastic arms, the mounting section, and the lumbar support, guaranteeing the stability of the lumbar support.

[0011] Furthermore, the thickness of the elastic arm in the vertical direction is greater than its thickness in the horizontal direction. This makes it easier for the elastic arm to form in the horizontal direction than in the vertical direction. In other words, the elastic arm is more likely to retract inward under the action of external force, without shifting up and down and causing the lumbar support body to tilt, thus ensuring that the lumbar support body's waist-hugging movement is stable and smooth.

[0012] Furthermore, the movable structure includes a hinge seat connected to the middle of the rear side of the waist section, and the hinge seat and the front end of the elastic arm are hinged together by a vertically arranged pivot. By hinged the hinge seat and the elastic arm together, the waist section can only slide left and right around the elastic arm, and the connection structure is relatively simple.

[0013] Furthermore, the hinge seat and the waist support are detachably connected by screws. This not only ensures a high connection strength between the hinge seat and the waist support, but also makes installation and disassembly between them more convenient. Manufacturing the hinge seat and the waist support body separately also reduces the difficulty of mold making.

[0014] Furthermore, a guide structure is provided between the main body and the support base. This guide structure includes two connecting members (front and rear) and a rhomboid four-bar linkage. The rhomboid four-bar linkage consists of four links connected end-to-end. The two connecting members are respectively hinged to two nodes on the diagonal of the rhomboid four-bar linkage, and are connected to the rear end of the main body and the front end of the support base. Under external force, the rhomboid four-bar linkage opens or closes, causing the two connecting members to move away from or towards each other, thereby driving the main body to move forward or backward relative to the support base. The guide structure restricts the movement direction of the main body, ensuring it does not tilt and providing uniform tension on the elastic elements on both sides. This results in symmetrical movement of the elastic arms and waist section on both sides, ensuring smooth and stable lumbar support movement.

[0015] Furthermore, the connector is a split structure, including a mounting component and a connecting component. The mounting component is fixed to the main body or support base by screws. The connecting component is configured to hinge with a diamond four-bar linkage. The mounting component has a T-slot for mounting, through which the connecting component snaps into the mounting component. The mounting slot has an opening on the upper or lower side, through which the connecting component snaps into the mounting slot. The mounting component and the connecting component are connected and fixed by a plug-in connection, resulting in a simple connection structure and making the assembly and disassembly of the lumbar support very convenient.

[0016] The high-elasticity lumbar support provided in this application features elastic components and arms with elastic deformation capabilities. When the main body is leaned against, the elastic components deform elastically under the pull of the main body, pulling the lumbar support inward. Simultaneously, the lumbar support rotates inward relative to the elastic arms, pulling the elastic arms inward as well, causing the elastic arms to also deform elastically. The elastic arms on both sides then cause the lumbar support to contract inward as well, increasing the curvature of the support surface and enabling the lumbar support to adaptively wrap around the waist. This effectively clamps and wraps around the user's waist, providing a more comfortable and elastic lumbar support. Furthermore, thanks to the restoring elasticity of the elastic components and arms, when the user gets up from the seat, the elastic arms and lumbar support automatically extend outward to return to their initial position, allowing the high-elasticity lumbar support to achieve fully automatic adjustment, which is very convenient. Attached Figure Description

[0017] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 A three-dimensional structural diagram of the lumbar support provided in the embodiments of this application; Figure 2 This is a schematic diagram of the back structure of the lumbar support provided in the embodiments of this application; Figure 3 This is a schematic diagram of the connection structure between the lumbar support body and the support base provided in an embodiment of this application; Figure 4 A schematic diagram of the connection structure between the lumbar support body and the hinge seat provided in an embodiment of this application; Figure 5 This is a schematic diagram illustrating the change process of the lumbar support provided in the embodiments of this application; Figure 6 A schematic diagram of the connection structure between the lumbar support body and the guide structure provided in an embodiment of this application; Figure 7 A schematic diagram of the connection structure between the support base and the guide structure provided in an embodiment of this application; Figure 8 A schematic diagram illustrating the change process of the rhomboid four-bar linkage when the main body is in a forward position, as provided in the embodiments of this application; Figure 9 This is a schematic diagram illustrating the change process of the rhomboid four-bar linkage when the main body is in a rearward position, as provided in the embodiments of this application.

[0018] The reference numerals in the attached drawings are as follows: 1-Main body, 101-Support surface, 2-Waist plate, 3-Support base, 310-Elastic arm, 320-Mounting part, 4-Elastic element, 5-Hinge, 6-Connecting rod, 7-Mounting part, 701-Mounting groove, 8 Connecting part. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0020] Please refer to the attached document. Figure 1-9This application provides a highly elastic lumbar support, including a lumbar support body and a support base 3. The lumbar support body includes a main body 1 and two lumbar sections 2 symmetrically arranged on both sides of the main body 1. The main body 1 and each lumbar section 2 are connected by an elastic element 4. The support base 3 includes two symmetrical elastic arms 310. The two elastic arms 310 are generally U-shaped. The front end of the elastic arm 310 is connected to the lumbar section 2 by a movable structure, so that the lumbar section 2 can rotate at least left and right relative to the elastic arm 310. Both the elastic element 4 and the elastic arm 310 have elastic deformation capability. The front end surfaces of the main body 1 and the two lumbar sections 2 on both sides are combined to form a support surface 101. When the main body 1 is leaned against and moves backward relative to the support base 3, the elastic element 4 and the elastic arm 310 both undergo elastic deformation, so that the elastic arm 310 on both sides and the lumbar section 2 are all drawn inward relative to the main body 1, and the curvature of the support surface 101 increases.

[0021] In this embodiment, both the elastic element 4 and the elastic arm 310 have elastic deformation capabilities. When the main body 1 is leaned against, the elastic element 4 undergoes elastic deformation under the pull of the main body 1, pulling the waist piece 2 inward. Simultaneously, the waist piece 2 rotates inward relative to the elastic arm 310, pulling the elastic arm 310 inward as well, causing the elastic arm 310 to also undergo elastic deformation. The elastic arms 310 on both sides cause the waist piece 2 to also contract inward, increasing the curvature of the support surface 101 and enabling the waist piece 2 on both sides to adaptively wrap around the waist. This effectively clamps and wraps the user's waist, providing a more comfortable and elastic waist-wrapping feel. Furthermore, thanks to the restoring elasticity of the elastic element 4 and the elastic arm 310, when the user gets up from the seat, the elastic arm 310 and the waist piece 2 can automatically unfold outward and return to their initial position, enabling the high-elasticity lumbar support to achieve fully automatic adjustment, which is very convenient.

[0022] Please refer to the attached document. Figure 2-3 In some embodiments of this application, the elastic element 4 has a U-shaped structure that bends backward. This makes the elastic element 4 simple in structure and has good elasticity. When the main body 1 pulls the elastic element 4 backward to deform it, the elastic element 4 can pull the waist piece 2 inward in the direction of bending, ensuring that the waist wrapping operation is stable and smooth.

[0023] Please refer to the attached document. Figure 2-3 In some embodiments of this application, a plurality of elastic members 4 are arranged vertically at intervals between the waist piece 2 and the main body 1 on each side. By providing a plurality of elastic members 4 to connect the waist piece 2 and the main body 1, not only is the connection strength and stability between the waist piece 2 and the main body 1 enhanced, but also the vertically spaced arrangement of the plurality of elastic members 4 makes it easier for each elastic member 4 to undergo elastic deformation when compressed, ensuring a smooth and stable waist-wrapping operation.

[0024] Please refer to the attached document. Figure 3In some embodiments of this application, the main body 1, the waist section 2, and the elastic element 4 are integrally formed. The main body 1, the waist section 2, and the elastic element 4 are integrally formed by injection molding, which not only makes the processing and manufacturing more convenient, but also makes the lumbar support body have higher strength.

[0025] Please refer to the attached document. Figure 3 In some embodiments of this application, the support base 3 further includes a mounting portion 320, which is configured to connect to the backrest. The left and right sides of the mounting portion 320 extend to form elastic arms 310. From the side near the mounting portion 320 to the side near the waist piece 2, the thickness of the elastic arm 310 changes from thick to thin and then from thin to thick.

[0026] In this embodiment, the middle section of the elastic arm 310 is thinner and more prone to deformation, while the end section near the mounting part 320 and the waist piece 2 is thicker and stronger. This not only makes the elastic arm 310 easier to deform and complete the waist-wrapping action, but also makes the connection strength and stability between the elastic arm 310, the mounting part 320 and the waist piece 2 higher, thus ensuring the stability of the lumbar support.

[0027] Please refer to the attached document. Figure 3 In some embodiments of this application, the thickness of the elastic arm 310 in the vertical direction is greater than its thickness in the horizontal direction. This makes it easier for the elastic arm 310 to form in the horizontal direction than in the vertical direction, meaning that the elastic arm 310 is more likely to retract inward under external force without shifting vertically and causing the lumbar support body to tilt, thus ensuring that the lumbar support body's waist-hugging movement is stable and smooth.

[0028] Please refer to the attached document. Figure 3-4 In some embodiments of this application, the movable structure includes a hinge seat 5 connected to the middle of the rear side of the waist section 2. The hinge seat 5 and the front end of the elastic arm 310 are hinged together by a vertically arranged pivot. By hinged the hinge seat 5 and the elastic arm 310 together, the waist section 2 can only slide left and right around the elastic arm 310, and the connection structure is relatively simple.

[0029] In other embodiments of this application, the hinge seat 5 and the elastic arm 310 can also be slidably connected, that is, the waist piece 2 can also slide and adjust its position in the horizontal direction relative to the elastic arm 310.

[0030] Please refer to the attached document. Figure 4 In some embodiments of this application, the hinge seat 5 and the waist piece 2 are detachably connected by screws. This not only makes the connection between the hinge seat 5 and the waist piece 2 stronger, but also makes the installation and disassembly of the hinge seat 5 and the waist piece 2 more convenient. Manufacturing the hinge seat 5 and the waist support body separately also reduces the difficulty of mold making.

[0031] Please refer to the attached document. Figure 6-9 In some embodiments of this application, a guide structure is also provided between the main body 1 and the support base 3. The guide structure includes two connecting members at the front and rear and a rhombic four-bar linkage. The rhombic four-bar linkage is composed of four connecting rods 6 connected end to end. The two connecting members are respectively hinged to two nodes on the diagonal of the rhombic four-bar linkage, and the two connecting members are respectively connected to the rear end of the main body 1 and the front end of the support base 3. The rhombic four-bar linkage opens or closes under the action of external force, so that the two connecting members move away from or close to each other, thereby driving the main body 1 to move forward or backward relative to the support base 3.

[0032] In this embodiment, when the user's posture is incorrect, the main body 1 may move in an skewed direction, resulting in different pulling forces on the elastic members 4 on both sides. This causes asymmetry in the movement of the elastic arms 310 and the waist section 2, affecting the lumbar support's waist-hugging effect. Therefore, by setting a guide structure, when the rhomboid four-bar linkage opens or closes, the connecting members on both sides move along the diagonal direction of the rhomboid four-bar linkage, thus allowing the main body 1 to only move back and forth relative to the support base 3. By restricting the movement direction of the main body 1 with the guide structure, it is ensured that the main body 1 does not tilt, and the pulling force on the elastic members 4 on both sides is uniform. This ensures that the elastic arms 310 and the waist section 2 on both sides move symmetrically, ensuring that the lumbar support's waist-hugging movement is stable and smooth.

[0033] Please refer to the attached document. Figure 6-7 In some embodiments of this application, the connector is a split structure, including a mounting part 7 and a connecting part 8. The mounting part 7 is fixed to the main body 1 or the support base 3 by screw connection. The connecting part 8 is configured to be hinged to the diamond four-bar linkage. The mounting part 7 is provided with a mounting groove 701, which is a T-shaped groove. The connecting part 8 is snapped into the mounting part 7 through the mounting groove 701. The upper or lower side of the mounting groove 701 is provided with an opening, and the connecting part 8 is snapped into the mounting groove 701 from the opening.

[0034] In this embodiment, when assembling the lumbar support, one side of the mounting piece 7 is screwed and fixed to the front end of the support base 3. Then, the connecting piece 8 on the rear side of the guide structure is aligned with the opening on the mounting piece 7 and inserted, thereby fixing the guide structure to the support base 3. Subsequently, the other side of the mounting piece 7 is screwed and fixed to the rear end of the main body 1. The main body 1 is then lifted so that the opening of the mounting piece 7 on the main body 1 is aligned with the connecting piece 8 on the front side of the guide structure and inserted, thereby assembling and fixing the main body 1, the guide structure, and the support base 3. Thus, the mounting piece 7 and the connecting piece 8 are connected and fixed by a plug-in engagement, resulting in a simple connection structure and making the assembly and disassembly of the lumbar support very convenient.

[0035] The mounting member 7 connected to the main body 1 has an opening on the lower side of its mounting groove 701. When the main body 1 is installed onto the guide structure, under the action of pressure and gravity, the main body 1 tends to move downward relative to the connecting member 8, allowing the connecting member 8 to stably engage with the bottom of the mounting groove 701. The mounting member 7 connected to the support base 3 has an opening on the upper side of its mounting groove 701. When the guide structure is installed onto the support base 3, under the action of pressure and gravity, the guide structure tends to move downward relative to the mounting member 7, allowing the connecting member 8 to stably engage with the bottom of the mounting groove 701. This not only simplifies the assembly operation between the main body 1, the guide structure, and the support base 3, but also improves the stability of the assembled connection.

[0036] It should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used above to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means three or more.

[0037] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A high-elasticity lumbar support, characterized in that, The lumbar support includes a lumbar support body and a support base (3). The lumbar support body includes a main body (1) and two lumbar sections (2) symmetrically arranged on both sides of the main body (1). The main body (1) and each lumbar section (2) are connected by an elastic element (4). The support base (3) includes two symmetrical elastic arms (310). The two elastic arms (310) are bent in a U-shape. The front end of the elastic arm (310) is connected to the lumbar section (2) by a movable structure, so that the lumbar section (2) can at least be positioned relative to the elastic arm. (310) When rotated left and right, the elastic element (4) and the elastic arm (310) both have elastic deformation capability; the front end faces of the main body (1) and the waist pieces (2) on both sides combine to form a support surface (101). When the main body (1) is supported and moves backward relative to the support seat (3), the elastic element (4) and the elastic arm (310) both produce elastic deformation, so that the elastic arms (310) on both sides and the waist pieces (2) both retract inward relative to the main body (1), and the curvature of the support surface (101) increases.

2. The high-elasticity lumbar support according to claim 1, characterized in that, The elastic element (4) has a U-shaped structure that bends backward.

3. The high-elasticity lumbar support according to claim 1, characterized in that, Multiple elastic elements (4) are arranged at intervals in the vertical direction between the waist section (2) and the main body section (1) on each side.

4. The high-elasticity lumbar support according to claim 1, characterized in that, The main body (1), the waist piece (2), and the elastic element (4) are integrally formed.

5. The high-elasticity lumbar support according to claim 1, characterized in that, The support base (3) also includes a mounting part (320), which is configured to connect to the backrest. The left and right sides of the mounting part (320) extend to form the elastic arm (310). From the side near the mounting part (320) to the side near the waist piece (2), the thickness of the elastic arm (310) changes from thick to thin and then from thin to thick.

6. The high-elasticity lumbar support according to claim 1, characterized in that, The thickness of the elastic arm (310) in the vertical direction is greater than its thickness in the horizontal direction.

7. The high-elasticity lumbar support according to claim 1, characterized in that, The movable structure includes a hinge seat (5) connected to the middle of the rear side of the waist section (2), and the hinge seat (5) and the front end of the elastic arm (310) are hinged together by a vertically arranged pivot.

8. The high-elasticity lumbar support according to claim 7, characterized in that, The hinge seat (5) and the waist piece (2) are detachably connected by screws.

9. The high-elasticity lumbar support according to claim 1, characterized in that, A guide structure is also provided between the main body (1) and the support base (3). The guide structure includes two connecting parts at the front and rear and a rhomboid four-bar linkage. The rhomboid four-bar linkage is composed of four connecting rods (6) connected end to end. The two connecting parts are respectively hinged to two nodes on the diagonal of the rhomboid four-bar linkage, and the two connecting parts are respectively connected to the rear end of the main body (1) and the front end of the support base (3). The rhomboid four-bar linkage opens or closes under the action of external force, so that the two connecting parts move away from each other or move closer to each other, thereby driving the main body (1) to move forward or backward relative to the support base (3).

10. The high-elasticity lumbar support according to claim 9, characterized in that, The connector is a split structure, including a mounting part (7) and a connecting part (8). The mounting part (7) is fixed to the main body (1) or the support base (3) by screw connection. The connecting part (8) is configured to be hinged to the rhomboid four-bar linkage. The mounting part (7) is provided with a mounting groove (701). The mounting groove (701) is a T-shaped groove. The connecting part (8) is snapped into the mounting part (7) through the mounting groove (701). The mounting groove (701) is provided with an opening on the upper or lower side. The connecting part (8) is snapped into the mounting groove (701) from the opening.

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